Orr, J., Chuang, K.-C., Nicholas, R., Buckle, L., Emeny, M. and Buckle, Philip Derek  ORCID: https://orcid.org/0000-0001-9508-7783
2009.
Magnetoabsorption in InSb quantum-well heterostructures.
Physical Review B
79
(23)
, 235302.
10.1103/PhysRevB.79.235302
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Abstract
Spin-resolved cyclotron resonance is observed in InSb/AlInSb quantum-well heterostructures. Spin-resolved transitions are identified for fields greater than 2.2 T and confirmed by k⋅p modeling. The cyclotron effective mass is calculated for a range of fields up to 11.5 T and is indicative of the strong nonparabolicity in this material. Resonant coupling is observed between the ground and first occupied subbands for normal-incidence excitation. This is explained in the context of conduction band-valance band mixing due to the narrow bandgap. Further resonant coupling is observed via interaction with a hybrid intersubband plasmon-LO phonon mode. This allows a quantitative estimation of the subband spacing and of the electron-phonon interactions in the quantum well.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Physics and Astronomy |
| Subjects: | Q Science > QC Physics |
| Additional Information: | 9 pp. |
| Publisher: | American Physical Society |
| ISSN: | 1098-0121 |
| Last Modified: | 20 May 2023 19:51 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/17451 |
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